For a unique and unforgettable family experience, tour Picket Wire Canyonlands. Located on the Comanche National Grassland south of La Junta, Colorado, these primitive canyons are home to the largest dinosaur tracksite in North America! Guided auto tours are the easiest way to experience Picketwire Canyonlands and learn about its rich, colorful past. During the tour, knowledgeable guides will show you difficult to find dinosaur tracks, and the interesting prehistoric, historic, and natural features of the canyons. This auto tour is the only motorized access into the canyons.